Don't support Jira-Crucible integration for Jira versions which are already end of life (or will become end of life soon after Crucible 4.9 is released):

Jira has the following end-of-life dates:

7.12 (EOL Date: Aug 27, 2020)
7.11 (EOL Date: Jul 11, 2020)
7.10 (EOL Date: May 29, 2020)
7.9 (EOL Date: Apr 9, 2020)
7.8 (EOL Date: Feb 20, 2020)
7.7 (EOL Date: Jan 11, 2020)
7.6 (EOL Date: Nov 16, 2019)
...
6.4 (EOL Date: March 17, 2017)

We will still support integrations with Jira 7.13 (the enterprise release) and newer.